Re: [閒聊] 灰姑娘祭典統計
感謝256個推文數據,總共673張SSR,其中
新限:舊限:常駐= 290 : 30 : 353
=43.09%: 4.45%:52.45%
舊限:常駐= 7.83%:92.17%
3種舊限:39種常駐= 7.14%:92.86%(對照組)
本次的統計一開始新限五成,最後變成43%,接近四成
考慮到可能有些沒抽到新限的人就不推文,加上誤差範圍,新限機率應該還是四成
舊限與常駐比也是接近3種與39種的機率
照這個模式,未來抽到舊限的機率,可以列出一個算式:3X/(30+12X)=Y
當X=1 Y=0.07、X=5 Y=0.17、X=10 Y=0.2、X=無限 Y=0.25
也就是照這個規律,以後舊限跟常駐的比率會慢慢接近1:3
新限:舊限:常駐= 40%: 15%: 45%
以第十次祭典也就是兩年後為例,到時舊限跟常駐比是1:4,但有30個舊限
到時單吊一張舊限的機率是0.03*0.6*0.2/30,也就是 萬分之 1.2
對照本次單吊一張舊限機率是0.03*0.6*3/42,也就是 萬分之12.85,相差十倍(!?)
所以舊限機率是越來越高,但反之越來越難單吊中舊限
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